The Swede joined Man United as a free agent after his Paris Saint-Germain contract expired this summer and it hasn’t taken him long to make an impact after he scored the winner in Sunday’s 2-1 Community Shield victory over Leicester City at Wembley Stadium.
Ibrahimovic has won titles and silverware all over the world, but Mourinho believes his biggest task is to help United’s rising star.
“I think probably the other players are surprised,” he said.
“Not me because I know him. But probably the other players are surprised. Not with his quality, because the quality everybody knows.
“Probably a bit with his commitment and motivation because we are speaking about a 34-year-old man that won so much in his career, but probably even more surprised with the person. He is a good guy. What he looks like, it is not what he is.
“The words he says, he says for fun. He is the guy capable to go to the kitman and say “please give a towel to God” and then laugh, laugh, laugh, laugh and laugh. The image he sells is not him, he is a good guy.
“He is brilliant with the young boys. I think for [Marcus] Rashford this is a gift.
“People can say he is not going to play every game from the start, like in the second part of last season, but this is a gift for the kid, too.
Mourinho worked with Ibrahimovic at Inter Milan during the 2008-09 season so it will come as no surprise to him seeing the Swede make his mark on the squad.
While Rashford can expect to start less frequently than last term, learning from one of the best strikers in the game will undoubtedly help him develop as a player.
Rashford scored eight goals in 18 appearances during his debut season at Old Trafford and it looks like he’s set for a masterclass upfront this campaign from one of the biggest names in the game.